The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G!
Apr 4, 2011 at 12:33 PM Post #2,416 of 3,220
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also R1 will form an Rc filter with whatever cap you use, so really you would have to change it depending on the cap
 
edit to add link: a first order high pass filter and if you have a cap at your amp'sinput,combined with your pot you will have an RCRC filter that possibly varies with the pot position depending on the type of pot


For the shunt resistor, I'd make it a high resistance such that any interactions would be minimized. Plus, if you're using an amp with input caps, maybe you'd do away with the capped LOD altogether.
 
Apr 18, 2011 at 1:14 PM Post #2,419 of 3,220
Is there a picture tutorial for the diymod 5.5g and the LOD? I know absolutely nothing about the components being discussed on this thread but am alright with a soldering iron. I would like to find a step by step tutorial on pictures or video. Any help with a link would be appreciated. Thanks
 
Apr 19, 2011 at 1:55 AM Post #2,421 of 3,220
A very comprehensive guide to diyModding: http://www.ualberta.ca/~jple/diyMod/

and here is a video of how to make LOD (but w/o capacitors inside): http://www.youtube.com/watch?v=a2W2jxDAaOQ
(in case you won't be able to get Black Gate capacitors [apparently the best ones], try these: http://uk.farnell.com/vishay-bc-components/mal212853479e3/capacitor-47uf-6-3v/dp/1166614?Ntt=MAL212853479E3)

for any further info dig the web, there are tons of scattered pieces around
 
Apr 22, 2011 at 5:18 AM Post #2,424 of 3,220
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You can't buy a comeback opportunity like that. 
biggrin.gif

 
 
 
Apr 24, 2011 at 11:18 PM Post #2,425 of 3,220
Hey guys, I have alot of LOD parts, and wasn't to experiment with different types of capacitors.  Can you guys recommend some good ones for the imod?  I am doing 47uF, should I experiment with different capacitance? What about voltage ratings?  
 
I've seen some ridiculous sized caps for imod... why are they so big?  They compared to my scrotum size.
 
Apr 25, 2011 at 1:23 AM Post #2,426 of 3,220
There are lots of threads and resources on picking capacitors. Here are two.
 
http://ecp.cc/cap-notes.html
 
http://www.head-fi.org/forum/thread/254491/boutique-capacitors-where-to-buy
 
For the diyMod, you need a very low capacitance and voltage rating. The caps need to be able to withstand 1.5 VDC, so that should cover almost all through hole capacitors. 47uF is really large since you can get away with as low as 1uF. The giant caps are for people who aren't confining their cap sizes to the inside of the iPod case or the LOD housing. It's just personal preference. There's a very large resource base for choosing capacitors for their sound signature. Google will help you.
 
Apr 25, 2011 at 4:40 PM Post #2,427 of 3,220
^Thanks bud.
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Anybody ever try listening with V-caps?  Can anybody testify there is a noticeable quality improvement. 
 
 
Apr 26, 2011 at 7:32 AM Post #2,430 of 3,220
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Sure, I used V-Cap OIMP as well as OIMP bypassed by TFTF.  They sound good.  Whether I would again choose to use them is another story (just personal preference regarding diyMod + VCap in price comparing to other DAPs).


I never got to try the V-Cap with my iMod when i had it although I was very interested to. At this point, you can also get the Solo. So once you are making that kind of size (and cost) committment, there are indeed alternatives to consider.
 
 
 

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